RNA transcript

RNA transcript

An RNA complementary copy of a gene. The RNA transcript is always longer than the gene because the RNA polymerase also transcribes a leader segment prior to the gene code and a trailer segment after it.

To a first approximation, any PCR-based assay intended for use on a specific DNA target can be modified to work on its RNA transcript by addition of a single preliminary stage to the existing PCR protocol.

It also became clear that eukaryotic genomes were far more complex than bacterial genomes, both in control structure and in the processing of transcripts (due to the splicing out of introns and the fusing of exons--thus the entire RNA transcript of a locus was not translated).

Commoner buttresses his argument with a lengthy discussion of alternative splicing, but this is a classic red herring: First, any competent biologist knows that the alternative products from any RNA transcript are all directly encoded by the genome.

RNA interference (RNAi): A RNA transcript produced in the body that does not encode a protein but which can alter the expression of other protein-coding mRNA transcripts; also refers to the process of quelling gene expression through the use of these RNA molecules.

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